The energy storage system is an important part of any electric car. An electric car company has decided to replace their batteries with a new type and want to examine two types of batteries for its new vehicles: Lithium-ion and Lead-acid batteries. Due to the critical role of lifespan in the energy storage system, the company randomly selected 10 samples 'om each type and ran an accelerated life test to obtain the lifetime of each battery type. The measured lifespan is illustrated in the table below: Lithium-ion Lead-acid 365 370 366 358 369 362 364 364 363 357 (a) Test the hypothesis that the mean lifespan of the two battery types are equal. Use a = 0.01 and assume equal variances. (b) Find the P-value for this test